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Finding the Fourth Proportional to 482,957.80, 724,436.70 and 439,412.20

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Solution

The fourth proportional to 482,957.80, 724,436.70 and 439,412.20 is: 659,118.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,957.80 : 724,436.70 = 439,412.20 : x
  2. Step 2: Convert to fraction form
    482,957.80/724,436.70 = 439,412.20/x
  3. Step 3: Cross multiply
    482,957.80x = 724,436.70 × 439,412.20
  4. Step 4: Simplify right side
    482,957.80x = 318,326,324,107.74
  5. Step 5: Solve for x
    x = 318,326,324,107.74/482,957.80
  6. Step 6: Final answer
    x = 659,118.30

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Similar ratio
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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.